Socket



R. F. ARMSTRONG.

SOCKET.

APPLICATION FILED DEc.4, 1920.

Patented Feb. 28, 1922.

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l/vvE/vTR Raineri flrmslmng WITNESSES A TTORNE YS UNITED. S're'rsr PATENT. OFFICE. "i

y "RoBEn'r EEANCS ARMSTRONG, 0E LA CYGNE, KANSAS, ASSIGNOETO FREDERICK w; l ""PQLLMAN, JR., oELA cYGNE-KANSAS. f-

` SOCKET. i

To allee/orafi myconccra:

Be it known that I, ROBERT F RANors ARM- STRONG.v acitizen of the United States, and

a resident of La Cygne, in the county of Linnand Stateof Kansas, have invented certain. new-and useful Improvements in Sockets,-of which, the following isa speciw; The object of the ,invention is toprovide a device of this character .which evenly disibility of the elbow jointorotherwise int-er-vv tributes thei strain, incidentto the securing ofthe artificial hand over the'f'ore-arm and upper-arm andvvithout impairing the flexferingwith the normal functioning of the arm,fwhich-will-I1ot chafe-or irritate the arm and Whichis'of simple and Vdurable construe tion, reliable in operation,` and easy and in-v f contour ther-eci'. as shown. in Figure 2.`

expensive to, manufacture. s

Other objects and advantages of the invention 'reside iny certain novel features kof construction, combination and arrangement v of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings forming part of this specification, and in which:

Figure 1 is a perspective view of the socket detached;

Figure 2 is a transverse sectional view of the Socket, taken approximately on line 2 2 of Figure l;

Figure 3 is a transverse sectional view, taken approximately on line 3-3 of Figure 1;

Figure 4 is a detail view in elevation of the drive pulley; and

Figure 5 is a detail view in side elevation of the joint.

Referring to the drawings wherein for the sake of illustration is shown the preferred embodiment of the invention, it will be seen that the socket comprises a sleeve 10 adapted to embrace the fore-arm. This sleeve is constructed of leather or other suitable material having a lining l()u of kid or other soft material to engage the arm of the wearer, and conforms with the shape of the arm. It is split longitudinally, as shown at 11, and the lower end of the sleeve adjacent the wrist portion of the fore-arm is Specification of Letters Patent. Patented Application-filed December 4, 1920. Serial No. 428,325. i

use with artificialy y complete the Vclosure-at the meeting ends.

Feb. 28.141922",

closed` means of a strippl2 ysuitably s ecuredto the meeting ends ofthev split sleeve.. Adjacent the elbow portion thereofthesplit portion is provided with a lacingfdevicein-l cluding rows of fastening devices 13 through which a lacing 141 isk reeved. Within .the sleeve there is provided a tongue 'l5 secured at one side, as at 16, to the sleeve vandadapt-v ed to bridge the space between the meeting ends'of thesleeve to protect the arm ofthe wearer from the fastening'devicesand -to .A cap 18 of metal construction receives the small end of the sleeve atthe wrist portion thereof and is, secured thereto. The

capis provided with athreadedlopeningl) which receives thethreadedstudQof .the ordinary body member (notshown).y At diametrically .opposite points on Ithe sleeve and cap is provided a pairof socketgrcns 2O.

Thesegirons 20jlie closely adjacentv the pe.-y riphery of the sleeve and `confornlgto the An armlet 25 :is provided and is adapted to embracethe upper arm. The armlet'is also constructed of leather having a lining of kid or the like, as designated at 25. fiexible band 26 of leather or the like is associated with the armlet and encrcles the same and unlike the armlet is adapted to completely encircle the upper arm. vOne end of the band is provided with a buckle 27 and the other end is provided with a series of openings 28 adapted to receive the prong of the buckle. At diametrically opposite points on the armlet there is provided a pair of socket irons for the upper-arm designated at 29. The lower ends of these socket irons 29 for the upper arm are forked, as shown at 30, and in the fork of each iron 29 is received a short link 31 which is pivoted to the forked end of the iron by means of a pivot pin 32 which also pivotally secures to the irons a guide pulley 33 for the operating means, not shown.

Flexible straps 34 serve to connect the irons of the upper arm to the irons of the fore-arm, the straps being connected for this purpose by means of rivets or the like 35 to the short links of the upper irons and being adjustably connected at their lower ends by means of buckles 36 and secured to the lower irons and engaging the flexible straps 34 at the desired point.

In practice, the forearm is inserted in the sleeve V and the l'lacing 14 is properly drawn and tied. The armlet is placed in positionfonfthe upper narm :and secured fin proper position by the flexible'bandfQ. The flexible straps 34: are then inserted in the buckles 36 and the socket is then properly secured on the arm. In the manipulation-of the'handmnd inithelmovements of lthe arm t fore-arm,l-` a metallic cap 'receiving the zend of thersleeve, socket irons integrally iformed with the cap and arranged at diametrically opposite points on "said sleeve, `an .armlet` embracing the uppenarnn a flexible band forsecuring the -armlet in position on-fthe upper arm, socket-irons arranged at 5diametrically 1opposite -points onV theV -armlet and securedvlthereto7 links -pivotedvto` the socket ironsof the armlet, `iexible straps secured to they linksaty oneend and .a buckle secured =to the irons ofthe sleeve `and adjusteblyy engaginjg ithe .free end of. said 'flexiblestraps In a device offthe `character fldeseribed,

a sleeve adapted lto enibrace the fore-arm, an armlet adapted to embrace the upper ovm,- socket firoraonfthe sleeve-lsncketeimas -on the r amulet, links pivoted to the 4socket irons ofthe armlet and flexible straps conmeeting the links with the socket irons of Hthe sleeve.

.3. Invia `device of the character ilslbed, a sleeve adapted to embrace the"forearm, an ermletladwpted-Ytoenibrace the upper arm, socket irons for the sleeve, other socket `irons for the armlet,r andfiexlestraps-connecting said-socket irons.-

4. Infa deviceof the characterzdeseibd, asleeve adapted tofembracefthefore-ami, a cap Yreceiving? the #lower lendlo'f thefsleevm socket irons integral with said-leap und secufed-'fto-said sleevefan anmlet adapdo embrace the upper arm, a flexible bsm'lersecuifingthefamnlet fin positionfonm .upper arm, Lsocket iirons Lsecuredto "seid amilet.

links-pivotlly connected'toithe socket linens lof said armlet, flexible strapsLseemetlfat-mne end'to 'fthe socket iirons of vfthe sleeve-land vat their other ends 1 to l said links.

'5. ln. a device ofithe character] a sleeve fadaptedllto Qembraee theffforeaarmyn. cap receiving fthe llowerndsofr-rthesve socket `irons .iintegral with ,said 1 cap und.

secured to lsaidsleeive` en armletaedgpted to `embrace' lfthe #upper amn,` vivons secured -to saidfarnil'et, land jflexible sstrwps connecting 1 fthe socket `ironsmf :the .izrmlet to the socket ironsfofthef sleeve.

nonnen-nemers :eemsmond 

